190 UNITED STATES GEOLOGICAL SURVEY— TERTIARY FLORA. 



the l)orclers marked Ijy large, blunt teeth, whose upper marginal line is 

 horizontal, and thus scarcely turned upward. These characters, as also the 

 narrower shape of the leaves, always equilateral at the base, and their thicker 

 consistence, seem fo constantly and positively separate this species from the 

 following one. There is also a marked difference in the more straight direc- 

 tion of the secondary nerves at the same, and general!/ more acute angle of 

 divergence, 40° to 45°, entering the teeth without curving upward, and some- 

 what thicker. 



Habitat. — Elko Station, Nevada {Prof. S. JV. Gar?nan). Castello's 

 Ranch, Colorado {Dr. F. V. Hayden, Prof. E. D. Cope). Found there in pro- 

 fusion. Mouth of White River, Utah {Prof IV. Denton). 



Planer a llngeri, Ett. 



Plate XXVII, Fig. 7. 



Planera XJngeri, Ett., Foss. Fl. v. Vieu., p. 14, pi. ii, figs. .5-18.— Heer, Fl. Tert. Helv., ii, p. 60, pl.lxxx; 

 Fl. Foss. Arct., p. 110, pi. ix, fig. 14 6 ; Fl. Alask., p. 34, pi. v, fig. 2.— Ett., Foss. Fl. v. Hiir., 

 p. 40, pi. X, figs. 4, 5.— Ung., Foss. Fl. v. Kumi, p. 24, pi. iv, figs. lO-lC. — Sap., fit., iii, 

 1, p. 72.— Sisiu., Mater., p. 48, pi. xviii, figs. 2-4.— Ludw., Pahtout., viii, p. 106, pi. xxsviii, 

 figs. 9-11 ; pi. xxxix. Ix, figs. 3-5, fruits. 



PlanerU dubia, Lesqx., Am. Jouru. Sci. and Arts, vol. xxvii, p. 361. 



Planera longifoUa ?, Lesqx., Ment. Aunual Report, 1873, p. 413. 



Zelkova Ungeri, Kovats in Uiig., Icouog., p. 42, pi. xx, fig. 19. — Massal., Syn. Fl. Foss. Senog., p. 43. 



VImus ^elkuvcefolia, Ung , Cblor. Protog., pi. xiv, figs. 7-12. 



VJmus pralonga, Ung., Geu. et S})., p. 411 ; IcoDog., p. 43, pi. xx, fig. 20. 



Ulmus parrifolia, Uug., Iconog., pi. xx, figs. 21 22. 



Comptonia ubnifoUa, Ung., Foss. Fl. v. Sotzka, p. 32, pi. viii, figs. 4, 5. 



Fagus ailantica, Ung., Chlor. Protog., p. 105, pi. xxviii, fig. 2. 



Quercus subrubur, Goepp., Tert. Fl. v. Sclioss., pi. vii, figs. 8, 9. 



Quercus scmi-eUi2)tica, Goepp., Joe. cil., pi. vi, fig. 4. 



Quevcun orcadum, Web., Palaeont., ii, \t, 172, pi. xviii, fig. 13. 



Caslancc, aia\:ia, Goepp., /oe. cit., p. 18, pi. v, figs. 12, 13. 



Leaves short-petioled, ovate-acqminate, generally uneqnal at the base, simply dentate or crenate; 

 secondary veins simple or branching near the point, curving upward in entering the teeth. 



The leaf (fig. 7) was mentioned as referable to the former species from 

 a sketch communicated by my friend, Capt. Berthoud. Receiving later from 

 Dr. Hayden a specimen similar to the figure formerly sent, I had opportunity 

 to compare it to those of P. longifolia, and to positively recognize the marked 

 difference in the acute point of the teeth, the nervation, and the general form. 

 I have also examined, as points of comparison, the figures of all the works 

 quoted by Schimper in the above nomenclature, and in none of these do I 

 find any leaf comparable in the characters to those of P. longifolia. We have 

 therefore two species, P. Ungeri, described already from the Miocene of 

 Alaska by Heer, and the former, exclusively referable until now to the Upper 

 Miocene of Elko and the Parks. 



